1diff --git a/com32/include/menu.h b/com32/include/menu.h
2index bc0182f..b0251e4 100644
3--- a/com32/include/menu.h
4+++ b/com32/include/menu.h
5@@ -195,7 +195,7 @@ void local_cursor_enable(bool);
6
7 static inline int my_isspace(char c)
8 {
9- return (unsigned char)c <= ' ';
10+ return (unsigned char)c <= ' ' || (unsigned char)c == '\x7f';
11 }
12
13 int my_isxdigit(char c);
14diff --git a/com32/menu/readconfig.c b/com32/menu/readconfig.c
15index b7814be..a433fad 100644
16--- a/com32/menu/readconfig.c
17+++ b/com32/menu/readconfig.c
18@@ -299,7 +299,7 @@ static char *copy_sysappend_string(char *dst, const char *src)
19 char c;
20
21 while ((c = *src++)) {
22- if (c <= ' ' && c == '\x7f') {
23+ if (my_isspace(c)) {
24 if (!was_space)
25 *dst++ = '_';
26 was_space = true;